123147231340 has 48 divisors (see below), whose sum is σ = 295660717632. Its totient is φ = 42206570496.

The previous prime is 123147231329. The next prime is 123147231341. The reversal of 123147231340 is 43132741321.

123147231340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123147231341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230404 + ... + 547156.

It is an arithmetic number, because the mean of its divisors is an integer number (6159598284).

Almost surely, 2^123147231340 is an apocalyptic number.

123147231340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123147231340 is an abundant number, since it is smaller than the sum of its proper divisors (172513486292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123147231340 is a wasteful number, since it uses less digits than its factorization.

123147231340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319546 (or 319544 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 123147231340 its reverse (43132741321), we get a palindrome (166279972661).

The spelling of 123147231340 in words is "one hundred twenty-three billion, one hundred forty-seven million, two hundred thirty-one thousand, three hundred forty".